Valentine, who ran Amazon’s e-commerce platform business, is one of 11 executives listed as officers of the company on its website. As key as he has been at the company, his profile remained modest.

But Valentine, 54, is not without flair. He’s an accomplished bowhunter and a hockey player, and he hired Tom Petty to play at his 2012 wedding.

“Brian has decided to retire in February and the teams he managed will report into other senior leaders at Amazon,” Amazon said in a statement. An Amazon spokesman said Valentine was unavailable to comment.

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At Microsoft, Valentine served as senior vice president of the Windows Core Operating System division, as well as senior vice president in its Windows business,

Valentine was born in Centralia and received a bachelor’s degree in computer science from Eastern Washington University. His retirement was first reported by the tech news website GeekWire.